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secretions in sucking insects

...by many aphids and scale insects. Mealybugs, whiteflies, woolly aphids, and cottony scales are named for white wax on their bodies or wings. Probably the best known wax producers are males of the
Chinese wax scaleEricerus pe-la that secrete large amounts of pure white wax useful in making candles. The Indian wax scale
Ceroplastes ceriferus secretes a wax that is used...